The Keysight (Agilent) 41501A is an SMU and Pulse Generator Expander designed to extend the capabilities of the 4155A/B and 4156A/B Semiconductor Parameter Analyzers. It is not a standalone system, but rather a mainframe expansion unit that can house high-current SMUs, medium-power SMUs, and Pulse Generator Units (PGUs) to handle more complex semiconductor device characterization tasks.

Specifications

General

ParameterValue
InterfacesDedicated expander interface (connects directly to 4155/4156 mainframe)
DisplayNone (status LED indicators only; displays on connected mainframe)
Warm-up Time40 minutes

Physical

ParameterValue
Power Supply90 V to 264 V AC, 47 Hz to 63 Hz, 350 VA max
Operating Temperature5 °C to 40 °C
Dimensions (W×H×D)338 mm × 235 mm × 450 mm
Weight17 kg (with 2 PGUs and 1 HCSMU)

System Compatibility

ParameterValue
Supported MainframesKeysight/Agilent 4155A, 4155B, 4156A, 4156B

System Configuration

ParameterValue
Slot Capacity4 slots (for HCSMU, MPSMU, and PGU modules)

Pulse Generator Unit (PGU) Performance

ParameterValue
Pulse Generator Unit (PGU) ChannelsUp to 2 channels (with Option 402 or 420)
PGU Amplitude Range (into High Impedance)-40 V to +40 V
PGU Amplitude Range (into 50 Ω)-20 V to +20 V
PGU Output Impedance50 Ω or low impedance
PGU Pulse Period Range1.0 µs to 9.99 s
PGU Pulse Period Resolution100 ns
PGU Pulse Width Range1.0 µs to 9.99 s
PGU Pulse Delay Range0 s to 9.99 s
PGU Transition Time Range (Rise/Fall)100 ns to 10 ms

High Current SMU (HCSMU) Performance

ParameterValue
High Current SMU (HCSMU) Support1 channel (with Option 402, 410, 411, or 412)
HCSMU Maximum Current (DC)100 mA
HCSMU Maximum Current (Pulse)1 A
HCSMU Maximum Voltage (DC)200 V
HCSMU Maximum Voltage (Pulse)200 V

Medium Power SMU (MPSMU) Performance

ParameterValue
Medium Power SMU (MPSMU) SupportUp to 2 channels (1 channel with Option 411, 2 channels with Option 412)
MPSMU Maximum Current100 mA
MPSMU Maximum Voltage100 V

Environmental

ParameterValue
Operating Humidity Range8% to 80% RH (non-condensing)
Cooling MethodForced air cooling with rear-panel fan
Storage Temperature Range-20 °C to +60 °C
Storage Humidity Range5% to 90% RH (non-condensing)

High Current SMU (HCSMU)

ParameterValue
HCSMU Current Measurement Resolution10 pA
HCSMU Voltage Measurement Resolution2 μV
HCSMU Connector TypeTriaxial (Force/Sense)
HCSMU Pulse Width Range100 µs to 1 ms
HCSMU Maximum Pulse Duty Cycle3%

Medium Power SMU (MPSMU)

ParameterValue
MPSMU Current Measurement Resolution10 fA
MPSMU Voltage Measurement Resolution2 μV
MPSMU Connector TypeTriaxial (Force/Sense)

Pulse Generator Unit (PGU)

ParameterValue
PGU Pulse Period Accuracy±(1% + 10 ns)
PGU Pulse Width Accuracy±(3% + 2 ns)
PGU Pulse Delay Accuracy±(3% + 2 ns)
PGU Connector TypeBNC

Technology

Analog and digital semiconductor measurement expansion technology

Applications

Semiconductor device characterization, pulse generation, and high-current parameter analysis